Prosthetic knee



FIG. 1 is a top right front perspective view of a first embodiment of a prosthetic knee;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a right view thereof;

FIG. 5 is a left view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof;

FIG. 8 is a bottom right front perspective view thereof;

FIG. 9 is a top right front perspective view of a second embodiment of a prosthetic knee;

FIG. 10 is a front view thereof;

FIG. 11 is a back view thereof;

FIG. 12 is a right view thereof;

FIG. 13 is a left view thereof;

FIG. 14 is a top view thereof;

FIG. 15 is a bottom view thereof; and,

FIG. 16 is a bottom right front perspective view thereof.

The broken lines which define the bounds of the claimed design form no part thereof. 

CLAIM The ornamental design for a prosthetic knee, as shown and described. 